And john m



2 Sheets-Shet 1.

Patented Dec. 8, 1896.

llllllllllllllllllllllll Wad/ 9 TELEGRAPH SYSTEM.

B. F. MBRRITT 8; J. M. JOY.

(No Model.)

WITNESSES Q Y 2 Sh'eots8heet 2. B. F. MERRITT & J. M. JOY:

(No Model.)

TELEGRAPH SYSTEM.

Patented. Dec. 8, 1896.

N i Run muw mb. E S S M l W UNITED STATES PATENT OFFICE.

BENJAMIN F. MERRITT, OF ORANGE, NEYV JERSEY, AND JOHN M. JOY, OF NEW YORK, N. Y., ASSIGNORS TO THE PRINTING-TELEGRAPH NEWS COMPANY, OF NE\V YORK, N. Y.

TELEGRAPH SYSTEM.

SPECIFICATION forming part of Letters Patent No. 572,609, dated December 8, 1896.

Application filed June 27, 1896.

To all whom it may concern.-

Be it known that we, BENJAMIN F. MEERITT, a resident of Orange, county of Essex, State of New Jersey, and JOHN M. JOY, a resident of New'York city, in the county and State of New York, citizens of the United States, have invented certain new and useful Improvements in Telegraph Systems, of which the following is a specification.

This invention relates to what is commonly callec printing-telegraphy, the object being to operate the line of such a system by means of a single battery or other electrical generator for supplying current to the line.

The invention consists of combinations of devices hereinafter described, and more particularly pointed out-in the claims concluding this specification.

The invention is illustrated in the accompanying drawings, forming part hereof, in which- Figure 1 is a diagrammatic view showing one station A, and Fig. 2 is a like View showing a second station B.

In the drawings, each station is provided with a transmitter T, a part only of each being shown, whose cylinder 2 is provided with a spiral or helical row of pins 3 in a wellknown manner. The key-levers 4 are pivoted, as at 5, and their ends coact with the pins 3, in a manner also well known, to stop the rotation of cylinder 2, which is driven by any suitable or usual means (not shown) to stop and release the said cylinder. Each station is also provided with a rotary circuitbreaker, which is connected by a train of gearing, as 7, with the pin-cylinder2. Each circuit-breaker shown consists of a metal cylinder 6, provided with an inlaid plug 8 of insulating material, though any suitable makeand-break commutator may be used. The circuit-breakers are geared to and driven by any suitable elect ric (or mechanical) motor 9. Thus those shown are driven by the motors through the pulleys 1O 11 and belt 12, the pulley 11 being loose on the shaft 13 of cylinder (3 and being connected therewith by a suitable clutch, as friction-clutch 14, fast on such shaft. At each station are two brushes 15, which bear on the cylinder 6 in such re- Serial No. 597,175. (No model.)

lation thereto that the plug 8 of insulation passes beneath them during the rotation of the cylinder 6 and so breaks the electrical connection between said brushes. In place of the rotary circuit-breaker a commutator may be used to send alternations over the main line and to control the receivers by an induc.

. torium, as below described.

The line L connects the brushes 15 of the stations with each other, with the generator, and earth, or other return. It follows from this arrangement that each time the insulating-plug 8 runs under a brush 15 the current in the line is broken. At each station is a transformer 0r inductorium 25, whose primary coil 0 forms a part of the main line. The secondary coils c of these transformers tare in electrical connection with the polarized relays R, whose armatures a move between the contacts 19 cl. At each station is a split battery B, with whose end poles the contacts 5 d are connected by wires to 10 The receiver at each station is connected by wires 20 20 with the corresponding armature a and middle of battery B, as shown.

All framework for supporting the various elements shown has been omitted from the drawings to render the same clearer; also, many details usual or common in this art have been omitted for the same reason.

While two stations, each similarly equipped, except as to the generator for the line-current, are shown, it is not to be understood that the invention is limited to such number, since the stations may be increased greatly in number Without departing from the invention. Neither must it be understood that a transmitter at each station is necessary, for such is not the case. Thus there may be a central office or station, from which many receivers, scattered through a city, for instance, may be operated in the distribution of news and stock-quotations without there being more than one transmitter and that at such central office or station, and, of course, the 5 generator may be placed at a station or elsewhere. It is understood that .the receiver and that the magnets of the relay R are quickacting, so that the former respond only to pro longed or printing impulses, While the latter respond to all impulses transmitted over the line.

Premisin g that the ratio of the train of gearing 7, connecting the circuit-breaker and the pin-cylinder 2, is such that the cylinder 6 makes one half-turn while the cylinder 2 makes but a partial turn, equaling the circumferential or angular distance between two successive pins 3, the operation is as follows: The cylinder 6 is put in motion so rapid that the printing-magnets of the receiver will not respond to the rapid alternations of the current through them from the batteries 13. During the rotation of the cylinders 6 the circuit in line L is broken every time the plug 8 passes beneath a brush 15, and at every make and break of the line-circuit the transformer 75 operates the armature of the relay R by the induced current in the circuit thereof, and the alternating currents from batteries B operate the escapements of the receivers. During this time the cylinder 2 rotates, if no key has been depressed, but on depressing any of the keys its end is struck by the corresponding pin 3 and cylinders 2 and 6 brought to rest with the plug 8 under one or the other of the springs or brushes 15, thus breaking the line-circuit or'stops closed with current on line. IVhenever the cylinder 6 is stopped in this manner, the armatures a of the relays R rest in contact With one or the other of the contact-screws shown, and the prolonged impulses thus made operate the printing-magnets and cause an impression to be taken in the well-known manner. The key depressed is or may be held down by the usual means till some other key is depressed, thus releasing it and positioning the cylinder 2 to cause the printing of the letter corresponding in the receivers to the key last depressed, and so on. The usual release key may be used also.

\Vhat we claim is- 1. In a telegraph system, a line, two or more stations thereon, a transformer and a receiver at each of said stations, each operated by the corresponding transformer and a local battery, an electrical generator for supplying a constant current to said line, a driven rotar Y circuit-breaker in said line, and a transmitter connected with and controlling the motion of said circuit-breaker, all in combination, substantially as described.

2. In atelegraph system, a line, two or more stations thereon, a transformer and a receiver at each of said stations, each operated by the corresponding transformer and a local battery, an electrical generator for supplying a constant current to said line, a driven rotary circuit-breaker in said line at each station, and a transmitter at each station connected with and controlling the motion of the corresponding circuit-breaker, all in combination, substantially as described.

3. In atelegraph system, a line, two or more stations thereon, a transformer and receiver at each of said stations, each receiver being connected with and operated by the corresponding transformer and a local battery, an electrical generator for supplying a constant current to said line, a transmitter, and a circuit-breaker in the control of said transmitter, all in combination, substantially as described.

Signed at New York city, in the county and State of New York, this 26th day of June, A. D. 1896.

BENJAMIN F. HERRITT. JOHN M. JOY.

\Vitnesses:

OHAs. A. BRoDEK, RICHARD IV. BARKLEY. 

